Any KO staff or expert can answer me?

I have a Ex10 with RF-901s(Module) and KR-408S,
Can I use KR-407S instead of 408s or 201s?

What will be the different?

This is on the website! Under Support!

Compatibility Chart
Monday, 04 January 2010

http://www.kopropo.com/america/index...127&Itemid=173

thanks for your fast reply...

More info, I am using EX-10 Helios.

From the chart shows that I don't have to use KR-408S,
i can use 407s or 201s which is lower price with no difference in performance.
or did i miss out something?

When using the Helios, no performance difference. The 408 has a coaxial antenna that is supposed to give better filtering of noise.

407 & 408 are 4 channel receivers. 407 is cheaper then the 408.

210 is a 2 channel receiver that will be released next month. This will be the cheapest 2.4GHz receiver that we will offer.